tools/testing/selftests/ublk/test_generic_03.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/ublk/test_generic_03.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ublk/test_generic_03.sh
Extension
.sh
Size
646 bytes
Lines
28
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh

ERR_CODE=0

_prep_test "null" "check dma & segment limits for zero copy"

dev_id=$(_add_ublk_dev -t null -z)
_check_add_dev $TID $?

sysfs_path=/sys/block/ublkb"${dev_id}"
dma_align=$(cat "$sysfs_path"/queue/dma_alignment)
max_segments=$(cat "$sysfs_path"/queue/max_segments)
max_segment_size=$(cat "$sysfs_path"/queue/max_segment_size)
if [ "$dma_align" != "4095" ]; then
	ERR_CODE=255
fi
if [ "$max_segments" != "32" ]; then
	ERR_CODE=255
fi
if [ "$max_segment_size" != "32768" ]; then
	ERR_CODE=255
fi
_cleanup_test
_show_result $TID $ERR_CODE

Annotation

Implementation Notes